On Mon, 2008-11-03 at 10:33 -0500, James Cloos wrote:

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"Benjamin" == Benjamin Herrenschmidt [off-list ref] writes:

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is in play.  It is probably spinning through all of the 2000000 possible
udelay(10) calls.  I don't think I ever gave it twenty seconds before
giving up.  And certainly not forty seconds, if the freeze happens after
setting the DST_Y_X register.

Benjamin> Well, setting DST_Y_X is what triggers the transfer. The above
Benjamin> means that the FIFO isn't emptying (ie, the engine is locked up).

I gave it another try over the weekend and let it sit for five minutes.
The reset message never appeared.

Because it's probably going to lockup trying to display it :-) I need to
make that stuff a bit more robust, by disabling acceleration if the
engine locks up for example.

Again, that is fine by me.  Otherwise I'll just leave the #if0 commit
in my compile clone.

Allright, we'll see what I come up with, and at worst, I'll just revert
the whole thing.

Ben.